Slide Products Monthly Sticky Situations Enewsletter

Protecting Injection Molds Between the Machine and the Shop

Preventing Mold Sweat

One of the most vulnerable times for your mold is when it is moved from the machine to the shop. While many things can go wrong during this transition, mold sweat is a common issue.

Mold sweat is created by condensation that forms on a mold’s surface throughout its cooling process. While molding, chilled water is circulated as part of the temperature control system. However, this water produces external temperature changes when the mold is cooling, causing condensation to build up on the mold itself. This can be a big issue to molders, especially in high-humidity environments.

Nonetheless, mold sweat can be prevented if the proper precautions are taken. Here are the steps you should take to protect your molds when moving them out of the machine and to the shop:

Step 1: Apply Rust Preventive

Protect your mold while it is cooling by applying a light coat of rust preventive. This will help to displace moisture and form a protective barrier while the mold is being removed from the machine.

Step 2: Apply Rust Preventive… Again

When you first arrive at the shop, apply a second, more thorough layer of rust preventative. When moving out of the machine, on to a cart and then to a table, the mold’s first layer of preventative might very well be disturbed. Additionally, added fingerprints and eliminated protection in critical areas can be harmful. While it may seem redundant, an extra shield can make all the difference.

Step 3: Let the Mold Sit

Molds often lay on the production line at the shops and receive no immediate attention. While waiting for its turn, be sure that your mold remains well protected from the environment, as it could be hours or even days before technicians start working again.

Slide Rust Preventives

These three steps can be used in all settings but are especially important when PVC and flame-retardant resins are being molded. In these situations, the gas-off remains in the air and attacks the mold steel. Therefore, molds sitting unprotected for extended periods will require more maintenance and repairs.

Preventing mold sweat will provide protection in both the short and long run. For more information, contact Slide for smart mold care solutions to make the transition from machine to shop as seamless as possible.

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